Hour 1: This spring, the Dallas Symphony Orchestra will celebrate Ludwig van Beethoven’s music with three weeks of performances. We’ll talk this hour about Beethoven’s lasting impact on both classical music and pop culture with DSO music director Jaap van Zweden and concertmaster Alex Kerr.

Hour 2: Climate change is always on the political agenda and this hour we’ll talk with Patrick Allitt, who wrote “A Climate of Crisis: America in the Age of Environmentalism” about how we’ve approached the issues and the handled problems.